羰基铁粉/银核-壳粒子及其复合材料的制备与电磁特性

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (10): 1934.

羰基铁粉/银核-壳粒子及其复合材料的制备与电磁特性

王一龙1,2, 李维1, 章桥新1, 王维1, 官建国1

1. 武汉理工大学材料复合新技术国家重点实验室,
2. 理学院化学系, 武汉 430070

收稿日期:2010-03-03 出版日期:2010-10-10 发布日期:2010-10-10
通讯作者: 官建国, 男, 博士, 教授, 博士生导师, 主要从事聚合物及纳米复合材料研究. E-mail: guanjg@whut.edu.cn
基金资助:
国家“八六三”计划项目(批准号: 2006AA03Z461)和国防基础科研项目(批准号: A1420080185)资助.

Preparation and Electromagnetic Properties of Carbonyl Iron Powders/Silver Core-shell Particles and Their Composite Rubber Materials

WANG Yi-Long1,2, LI Wei1, ZHANG Qiao-Xin1, WANG Wei1, GUAN Jian-Guo1*

1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,
2. Department of Chemistry, School of Sciences, Wuhan University of Technology, Wuhan 430070, China

Received:2010-03-03 Online:2010-10-10 Published:2010-10-10
Contact: GUAN Jian-Guo. E-mail: guanjg@whut.edu.cn
Supported by:
国家“八六三”计划项目(批准号: 2006AA03Z461)和国防基础科研项目(批准号: A1420080185)资助.

摘要/Abstract

摘要： 运用液相化学还原银技术, 制备了羰基铁粉/银核-壳复合粒子; 以该复合粒子为屏蔽填料, 制备了一种宽频、高效的新型电磁屏蔽橡胶材料. 分析了该屏蔽填料的表面形貌和组成, 研究了其电磁特性对电磁屏蔽橡胶材料屏蔽效能的影响规律. 结果表明, 具有完整核壳结构的羰基铁粉/银复合粒子兼具优异的磁性能和高导电率, 用其组成的电磁屏蔽橡胶材料对电磁波能同时产生较强的吸收损耗和反射损耗, 屏蔽效能(SE)优于传统的屏蔽橡胶材料.

关键词: 羰基铁粉/银核-壳复合粒子, 电磁屏蔽, 磁导率, 屏蔽效能

Abstract: Carbonyl iron powders/silver core-shell composite particles were prepared by liquid chemical reduction technology. Using carbonyl iron powders/silver core-shell composite particles as shielding filler, a novel kind of wide-frequency and high-performance electromagnetic shielding rubber materials were prepared. The morphology and composition of electromagnetic shielding fillers were analyzed. The effect of electromagnetic properties of shielding fillers on shielding effectiveness of electromagnetic shielding rubber materials was investigated. The results show that carbonyl iron powders/silver composite particles with intact core-shell structure have excellent high electric conductivity and magnetic properties. The electromagnetic shielding rubbers based on carbonyl iron powders/silver core-shell composite particles have excellent electromagnetic shielding effectiveness due to strong absorbing loss and reflecting loss. Compared with traditional shielding rubbers, conductive magnetic electromagnetic shielding rubber materials show better shielding effectiveness.

Key words: Carbonyl iron powder/silver core-shell composite particle, Electromagnetic shielding, Complex permeability, Shielding effectiveness

TrendMD:

王一龙, 李维, 章桥新, 王维, 官建国. 羰基铁粉/银核-壳粒子及其复合材料的制备与电磁特性. 高等学校化学学报, 2010, 31(10): 1934.

WANG Yi-Long, LI Wei, ZHANG Qiao-Xin, WANG Wei, GUAN Jian-Guo*. Preparation and Electromagnetic Properties of Carbonyl Iron Powders/Silver Core-shell Particles and Their Composite Rubber Materials. Chem. J. Chinese Universities, 2010, 31(10): 1934.

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